Airflow BV400 Ventilation Unit filter 2 x G4 material 90000322 over-100 for the wall or the

for the wall or the ceiling

The fan will switch off at the end of the overrun time which can be altered by adjusting the sensor

the delayed timer function

the fan has 6 adjustable speed settings which are used to ensure that whatever location the fan is fitted - wall

Airflow BV400 Ventilation Unit filter 2 x G4 material 90000322 over-100 for the wall or theAirflow BV400 filter 2 x G4 material 90000322 This is a pair of courser grade G4 filters designed to prevent particles, insects and other airborne debris from entering the home. F7 fine filters, used to catch small and often invisible particles such as pollen spore bacterium and dust are also available see model reference 90000323